For UK used car dealers, reliability has always been part of the sales conversation. But in today’s market, it’s becoming one of the most influential factors shaping both customer confidence and aftersales exposure.
New warranty claims analysis from Warranty Solutions Group (WSG) highlights a growing divide in used car reliability—while some models continue to deliver exceptionally low ownership risk, others are generating significantly higher repair exposure once they move beyond manufacturer warranty.
And at the top of the rankings, one model stands out.
Honda Jazz leads the way on reliability
The Honda Jazz has been named the UK’s most reliable used car in WSG’s latest analysis, recording a warranty claim rate of just 3.72% across high-volume vehicles.
That performance places it ahead of:
- Toyota Yaris – 4.11%
- Volkswagen T-Roc – 6.35%
- Toyota Aygo – 6.72%
- Hyundai i10 – 6.80%
The data is based on thousands of live warranty claims between May 2025 and April 2026, focusing only on models with at least 250 issued policies to ensure a fair comparison across mainstream used stock.
Simple engineering continues to win in the used market
The results reinforce a familiar but increasingly important trend for dealers: simpler vehicles tend to deliver more predictable ownership outcomes.
The Toyota Yaris, in second place, continues to benefit from a reputation built on straightforward engineering, low running costs and strong long-term durability. It remains a go-to choice for budget-conscious buyers looking for reliability over complexity.
Similarly, the Toyota Aygo and Hyundai i10 both perform strongly in the rankings, highlighting continued demand for smaller vehicles built on lower-cost platforms with fewer complex systems.
At the crossover end of the market, the Volkswagen T-Roc represents a different but still relatively controlled risk profile. While offering SUV styling and practicality, it continues to deliver comparatively manageable ownership costs versus larger premium alternatives.
Premium vehicles show a very different risk profile
At the other end of the market, larger and more complex premium vehicles continue to generate higher claim rates once they leave manufacturer warranty coverage.
Models such as the BMW X5, Range Rover and other high-spec luxury SUVs are associated with significantly increased repair exposure, driven by more advanced electronics, performance systems and integrated technologies.
While these vehicles remain desirable and command strong retail values, the data reinforces an important point for dealers: complexity often comes with cost risk.
Reliability is no longer just about badge perception
According to Steph Newbery, Group Director at Warranty Solutions Group, traditional assumptions about brand prestige and reliability are being challenged by real-world claims data.
“Consumers often assume reliability is tied to badge prestige, but this data tells a very different story. Vehicles built on simpler, proven platforms are consistently delivering the strongest ownership outcomes.
The Toyota Yaris continues to perform incredibly well because it delivers exactly what many motorists need right now—affordability, practicality and dependable long-term ownership.
As household budgets remain under pressure, reliability is becoming a far bigger consideration for consumers than it was five years ago.”
For dealers, this shift is already visible in buyer behaviour, particularly among used car customers prioritising predictable running costs over specification or badge appeal.
The real cost of ownership: everyday faults still dominate
While major mechanical failures often attract the most attention, the majority of warranty claims continue to come from relatively routine issues.
The most common faults recorded in the analysis were:
- Battery failures – 2.70%
- ABS wheel speed sensors – 2.34%
- Alternator faults – 2.13%
Other frequently occurring issues include electrical faults, cooling system problems and emissions-related components.
Individually, these may appear minor—but when combined with labour, diagnostics and parts replacement, they can quickly escalate into unexpected repair bills for motorists.
Repair costs are rising faster than many realise
One of the most important trends highlighted in the data is the continued rise in repair costs across the UK used car market.
- Average repair bill (2024): £632.10
- Average repair bill (2025): £679.24
- Increase: 7.46%
Labour is playing a growing role in this increase:
- Average labour rate (2024): £65.63/hour
- Average labour rate (2025): £68.51/hour (+4.38%)
- Average labour time per claim: up from 1.91 to 2.03 hours
Modern vehicles are increasingly reliant on integrated electronics, advanced driver assistance systems and complex diagnostic processes, all of which contribute to longer repair times and higher workshop costs.
In some cases, WSG recorded individual claims exceeding £13,000, particularly involving engine failures, transmission systems and hydraulic components.
For dealers, this reinforces the importance of understanding not just whether a car is likely to fail—but how expensive that failure could be when it happens.
Longer ownership cycles are increasing exposure
As more motorists hold onto vehicles beyond manufacturer warranty periods, the financial impact of repair events is becoming more visible.
Consumers are increasingly aware that even relatively minor faults can escalate quickly once labour and diagnostics are factored in.
This is driving greater demand for warranty protection, particularly among drivers who want certainty around post-warranty ownership costs.
The role of warranty in a rising-cost market
Warranty Solutions Group says it is seeing increased demand from motorists looking for protection as repair costs continue to rise and vehicles become more complex.
In response, the business has launched a direct-to-consumer warranty platform covering petrol, diesel, hybrid and electric vehicles.
The platform is designed to give drivers simpler access to protection at a time when ownership costs are becoming less predictable.
More information is available here: https://customer.warrantysolutionsgroup.co.uk/
Final thought for dealers
The takeaway from this latest analysis is not just that some cars are more reliable than others—it’s that the gap between them is becoming more commercially significant.
For dealers, this affects everything from stock sourcing and preparation decisions through to warranty positioning and customer conversations at point of sale.
In a market where repair costs are rising and buyers are becoming more cautious, reliability is no longer just a marketing point. It’s a measurable factor influencing profitability, customer satisfaction and long-term retention.
And increasingly, it’s shaping what sells—and what doesn’t.
